Version 2.6:
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- Major CSS selector performance improvement, and using querySelectorAll and native getElementsByClassName where it's available.
- New plug-in structure added with attach method.
- New $$ method for native selection of element by id.
- Support for multiple simultaneous AJAX calls.
- Fix for addContent method on a collection.
- Fix for replaceContent method on a collection.
- Fix for id bug in Internet Explorer and Opera, where it matched elements with that name as well.
- Removed unnecessary attribute removal in the replaceWithAJAXContent method for the AJAX module.
- Added support for XUL events (DOMMouseScroll etc) with the addEvent method.

Version 2.5.7:
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- Fixing URL stripping issue with GET calls in the AJAX module

Version 2.5.6:
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- Fixing minor issues with the post method for the AJAX module

Version 2.5.5:
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- Better event handling
	- Supporting return false
	- eventTarget for a reference to where the event occurred
	- Easier syntax for preventDefault and cancelBubble: $(this).preventDefault(evt)
- replaceClass(className, newClass) method added
- end() method added
- Added post method to the AJAX module
- Fixed :not pseudo-selector bug in Internet Explorer and Opera


Version 2.5:
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- Added CSS selector support
- Added elmsByTag and each methods for DOMAssistant Core module
- Added load, getReadyState, getStatus and getStatusText for DOMAssistantAJAX module